Optical device



FIG. 1 is a perspective view of an optical device showing our new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a left-side, view thereof.

FIG. 5 is a right-side, view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM The ornamental design for an optical device, as shown and described. 